JP2559844Y2 - Height adjustment device for tables, etc. - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height adjusting device having a good appearance for adjusting the height and level of a table or the like.

[0002]

2. Description of the Related Art A conventional height adjusting device for adjusting the height and level of a table or the like is usually fitted with an adjusting tool provided with a vertical screw hole at the center at the lower end of a rectangular tubular leg. At the same time, a screw rod protruding from the center of the upper surface of the disc-shaped leg is screwed into the screw hole, and the height is adjusted by rotating the leg (see Japanese Utility Model Laid-Open No. 48-10759). reference).

[0003]

[Problems to be solved by the invention] However, in the conventional device, due to the load transmitted from the adjusting tool due to long-term use,
The lower end opening of the leg may expand or the adjuster may shrink, and the adjuster may fall off the leg.

The present invention does not cause such inconvenience,
Moreover, an object of the present invention is to provide a height adjusting device having a good appearance.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a flange having a vertical groove formed on both sides thereof and having a vertically extending groove formed at a lower end thereof, the flange being vertically oriented and having a lower end contacting the lower end of the leg rod. An adjusting tool having an upwardly-facing engaging piece capable of engaging with the concave groove and projecting a vertical screw hole from the lower surface of the flange is fitted on both sides of the upper surface of the flange. The above-mentioned problem is solved by screwing a threaded rod erected at the center of the upper surface of the disc-shaped leg seat into the threaded hole of the adjuster.

[0006]

According to the device of the present invention, the height of a table or the like is adjusted by rotating the leg seat in the same manner as the conventional device.

[0007] By engaging the upward engaging pieces projecting on both sides of the upper surface of the flange of the adjuster with the concave grooves formed on both sides of the leg, the device can be used for a long time, and the inside of the leg can be used. Even if the adjusting tool is loosened, the engagement pieces sandwiching the leg from both sides prevent rattling of the adjusting tool and prevent the adjusting rod from dropping off from the leg.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention.
Vertical grooves (2) and (2) are formed on the left and right sides (1) of the (1) on the entire left and right sides (hereinafter referred to as the drawing), and the lower end of the leg (1) has a composite groove. Adjuster made of resin
(3) is fitted.

The adjuster (3) has a flat shape which is substantially the same as the outer shape of the leg (1) on the upper surface of the flange (8), and a flat shape which is the same as the inner shape of the leg (1). And a slightly smaller bottomed cylindrical portion (4). A column (5) is erected at a position slightly to the right of the center inside the cylindrical portion (4), and a screw hole (6) is formed through the center of the column (5).

On the outer peripheral surface of the cylindrical portion (4), a plurality of projecting ridges (7) projecting in the vertical direction are provided.

Engaging pieces (9) (9) projecting in the front-rear direction are provided on both right and left sides of the upper surface of the flange (8).

At the left end of the lower surface of the flange (8), the inner surface is curved in an arc around the screw hole (6),
(6) A protection edge (10) having an opening on the side is vertically provided. Protective edge
On the front and rear outer peripheral surfaces of (10), a plurality of small ridges (1
1) is protruding.

The cylindrical portion (4) is fitted into the lower end of the leg (1), the ridges (7) and (7) on the outer peripheral surface are pressed against the inner surface of the leg (1), and the flange (8) is pressed. ) Is brought into contact with the lower end surface of the leg rod (1), and each engaging piece (9) is engaged with the lower end of the concave groove (2) of the leg rod (1), so that the adjusting tool (3) is protected. With the rim (10) on the outside
It is non-rotatably attached to the leg rod (1).

Into the screw hole (6), a screw rod (13) erected at the center of the upper surface of a horizontal disk-shaped leg seat (12) is screwed from below. The radius of the leg (12) is smaller than the inner diameter of the protective edge (10) centered on the screw hole (6), and its thickness is slightly larger than the height of the protective edge (10). I have.

In the above-described apparatus of the present invention, the height of the table is adjusted by rotating the leg seat (12).

Further, the engaging pieces (9) and (9) of the adjusting tool (3) engaging with the concave grooves (2) on both sides of the leg (1) hold the leg (1) from both sides. In addition, it is possible to prevent rattling of the adjuster (3) and falling off of the leg (1) due to long-term use of the device.

[0017]

(A) Since the engaging pieces on both sides of the adjuster engage with the concave grooves on both sides of the leg and clamp the leg from both sides, the device can be used for a long time. Also, the adjuster does not rattle and fall off in the leg rod.

(B) When the table or the like is used or moved, the inner surface of the leg rod comes into contact with a horizontal rotational force applied between the leg rod and the adjuster or a twisting force from front, rear, left and right directions. In addition to the resistance to the outer surface of the adjuster, the resistance by the engagement of the engagement pieces on both sides of the upper surface of the flange and the outer surface of the leg acts, so that the leg and The state of attachment with the adjusting tool can be maintained extremely firmly.

(C) Since the engaging pieces of the adjuster are engaged with the concave grooves on both side surfaces of the leg, the corners of the adjuster engage with the impact on the adjuster in use. The piece is protected and the engagement piece is prevented from being broken.

[Brief description of the drawings]

FIG. 1 is an exploded front view of a central longitudinal section of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 4 is a view taken along line CC of FIG. 1;

[Explanation of symbols]

 (1) Leg rod (2) Groove (3) Adjuster (4) Tubular part (5) Column part (6) Screw hole (7) Ridge (8) Flange (9) Engagement piece (10) Protection Rim (11) Small ridge (12) Leg (13) Screw rod

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower end of a rectangular tube-shaped leg rod having vertical grooves formed on both side surfaces, the lower end of which has a flange facing the vertical direction and a lower end contacting the lower end of the leg rod. On both sides, an upwardly engaging piece that can be engaged with the concave groove protrudes, and an adjusting tool having a vertical screw hole drilled from the lower surface of the flange is fitted, and the screw hole of the adjusting tool is fitted. A height adjusting device for a table or the like, wherein a threaded rod erected in the center of the upper surface of a disc-shaped leg seat is screwed into the leg seat.